US5562881A - Special-steel alloy chains and chain parts - Google Patents
Special-steel alloy chains and chain parts Download PDFInfo
- Publication number
- US5562881A US5562881A US08/464,794 US46479495A US5562881A US 5562881 A US5562881 A US 5562881A US 46479495 A US46479495 A US 46479495A US 5562881 A US5562881 A US 5562881A
- Authority
- US
- United States
- Prior art keywords
- special
- chains
- chain
- chain parts
- steel alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Definitions
- the present invention relates to the use of a special-steel alloy containing proportions of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, nickel, aluminum and iron, the balance consisting of impurities resulting from manufacture, in accordance with the features of the Claim, as material for the manufacture of chains and chain parts.
- a conventional material for chains and chain parts has the following chemical composition with respect to the essential secondary components:
- the present invention is based on the use of an improved alloy material for the chain parts and chain accessories.
- alloy used in accordance with the invention higher strength and toughness of the special-steel provided for chains and chain accessories is obtained due to the additional alloying proportion of tungsten, without the forgeability, weldability and heat-treatment properties of the chain being impaired, as is an indispensable requirement for high-strength chains and chain parts, particularly mining chains and accessories.
- the special-steel alloy for chains and chain accessories used in accordance with the invention makes it possible, with the same geometrical dimensions of the chain links or chain parts to obtain improved performance while, conversely, for the same performance, the amount of material used for chains and chain accessories can be reduced.
- a saving of energy and raw material is furthermore obtained as compared with the previously obtained increases in performance in the case of chains and chain parts.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Gears, Cams (AREA)
Abstract
Special-steel alloys for high-load-bearing chains and corresponding chain parts containing portions of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, nickel and aluminum. In order to impart a higher strength and toughness for this purpose to the special-steel an additional alloy proportion of tungsten is used in a given weight ratio.
Description
The present invention relates to the use of a special-steel alloy containing proportions of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum, nickel, aluminum and iron, the balance consisting of impurities resulting from manufacture, in accordance with the features of the Claim, as material for the manufacture of chains and chain parts.
Such an alloy is known, in principle, from U.S. Pat. No. 4,729,872. This does not apply, to be sure, with respect to the use of such an alloy for chains or chain parts.
A conventional material for chains and chain parts has the following chemical composition with respect to the essential secondary components:
______________________________________ C Si Mn P S Cr ______________________________________ 0.20- <0.25% 1.10- <0.020% <0.020% 0.40- 0.26% 1.40% 0.60% ______________________________________ Mo Ni Al Cu N ______________________________________ 0.50- 0.90- 0.020- <0.25% <0.012% 0.60% 1.10% 0.050% ______________________________________
In order to optimize this known material, the tolerance limits for the alloy percentages have in part been narrowed and in part widened but the composition has been left essentially unchanged because in addition to the strength, the necessary heat treatment of the special-steels upon the manufacture of chains and chain parts must also be taken into account, since, in particular, flash welding and resistance welding must be used in the manufacture of chain links. Here, it is important that the necessary technological properties of the material be retained also in the welded region-of the chain links. Furthermore, upon the heat treatment of the finished chain, a compromise must be found between the hardness, and therefore the strength of the material, and the resistance of wear, in order to take into account the toughness properties which are generally reduced with a higher strength.
In order to meet the increasing demands on round-steel chains and accessories for mining, namely so-called mining chains, longer lives have been obtained by changes in the geometry of the chain links and the chain parts. However, in this connection, one rapidly encounters the geometrical limit conditions which are established by the cases of use. In the case of conveyor chains with larger dimension, larger sprocket wheels are necessary, which require a corresponding structural height. Particularly in underground operation, it is necessary, in the case of conveyor systems, to save on height of installation, for which purpose recourse has already been had, in the geometrical shaping of the chain links and chain parts, to different means such as flattening the chain links or providing different pitches of the vertically and horizontally extending chain links.
The present invention is based on the use of an improved alloy material for the chain parts and chain accessories. With the alloy used in accordance with the invention, higher strength and toughness of the special-steel provided for chains and chain accessories is obtained due to the additional alloying proportion of tungsten, without the forgeability, weldability and heat-treatment properties of the chain being impaired, as is an indispensable requirement for high-strength chains and chain parts, particularly mining chains and accessories.
The special-steel alloy for chains and chain accessories used in accordance with the invention makes it possible, with the same geometrical dimensions of the chain links or chain parts to obtain improved performance while, conversely, for the same performance, the amount of material used for chains and chain accessories can be reduced. Thus, a saving of energy and raw material is furthermore obtained as compared with the previously obtained increases in performance in the case of chains and chain parts.
Claims (1)
1. A chain link made from a steel alloy consisting by weight of the following:
from 0.19 to 0.26% C, <0.25% Si,
from 0.95 to 1.40% mn, <0.015% P, <0.015% S,
from 0.7 to 0.9% Cr,
from 0.7 to 0.9% Mo,
from 1.0 to 1.2% Ni,
from 0.02 to 0.05% Al, and
from 0.2 to 0.5% W for a total of 100%,
the balance being iron with impurities resulting from manufacture.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4337148A DE4337148C1 (en) | 1993-10-30 | 1993-10-30 | Use of a high-grade steel alloy for chains and chain component parts |
DE4337148.5 | 1993-10-30 | ||
PCT/EP1994/003401 WO1995012692A1 (en) | 1993-10-30 | 1994-10-15 | Use of special steel alloy for chains and chain components |
Publications (1)
Publication Number | Publication Date |
---|---|
US5562881A true US5562881A (en) | 1996-10-08 |
Family
ID=6501457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/464,794 Expired - Lifetime US5562881A (en) | 1993-10-30 | 1994-10-15 | Special-steel alloy chains and chain parts |
Country Status (7)
Country | Link |
---|---|
US (1) | US5562881A (en) |
EP (1) | EP0725841B1 (en) |
AT (1) | ATE161897T1 (en) |
CZ (1) | CZ286056B6 (en) |
DE (2) | DE4337148C1 (en) |
PL (1) | PL178573B1 (en) |
WO (1) | WO1995012692A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005024072A1 (en) * | 2003-09-09 | 2005-03-17 | Pewag Austria Gmbh | Manufactured steel chain blank, use thereof, method for producing a chain and chain produced by said method |
WO2006133668A1 (en) * | 2005-06-16 | 2006-12-21 | Georgsmarienhütte Gmbh | Steel for production of wearing parts for the construction machine industry |
CN104278209A (en) * | 2013-07-03 | 2015-01-14 | J.D.锡尔两合公司 | Steel alloy for chain and chain assembly, and chain/chain assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2733516B1 (en) * | 1995-04-27 | 1997-05-30 | Creusot Loire | STEEL AND PROCESS FOR THE MANUFACTURE OF PARTS WITH HIGH ABRASION RESISTANCE |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61270355A (en) * | 1985-05-24 | 1986-11-29 | Sumitomo Metal Ind Ltd | High strength steel excelling in resistance to delayed fracture |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3830054A (en) * | 1971-09-21 | 1974-08-20 | Hitachi Ltd | Link chains for motor blocks |
JPS52126611A (en) * | 1976-04-16 | 1977-10-24 | Daiei Kogyo Co Ltd | Connection clip for chain |
JPS5360813A (en) * | 1976-11-12 | 1978-05-31 | Kobe Steel Ltd | Steel chain with high true tensile stress |
JPH0765141B2 (en) * | 1985-09-18 | 1995-07-12 | 日立金属株式会社 | Tool steel for hot working |
-
1993
- 1993-10-30 DE DE4337148A patent/DE4337148C1/en not_active Expired - Lifetime
-
1994
- 1994-10-15 CZ CZ952557A patent/CZ286056B6/en not_active IP Right Cessation
- 1994-10-15 EP EP94930176A patent/EP0725841B1/en not_active Expired - Lifetime
- 1994-10-15 DE DE59404980T patent/DE59404980D1/en not_active Expired - Lifetime
- 1994-10-15 US US08/464,794 patent/US5562881A/en not_active Expired - Lifetime
- 1994-10-15 WO PCT/EP1994/003401 patent/WO1995012692A1/en active IP Right Grant
- 1994-10-15 AT AT94930176T patent/ATE161897T1/en active
- 1994-10-15 PL PL94314106A patent/PL178573B1/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61270355A (en) * | 1985-05-24 | 1986-11-29 | Sumitomo Metal Ind Ltd | High strength steel excelling in resistance to delayed fracture |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005024072A1 (en) * | 2003-09-09 | 2005-03-17 | Pewag Austria Gmbh | Manufactured steel chain blank, use thereof, method for producing a chain and chain produced by said method |
WO2006133668A1 (en) * | 2005-06-16 | 2006-12-21 | Georgsmarienhütte Gmbh | Steel for production of wearing parts for the construction machine industry |
CN104278209A (en) * | 2013-07-03 | 2015-01-14 | J.D.锡尔两合公司 | Steel alloy for chain and chain assembly, and chain/chain assembly |
CN104278209B (en) * | 2013-07-03 | 2018-10-30 | J.D.锡尔两合公司 | Purposes and chain link or chain assemblies for chain and the steel alloy of chain assemblies |
RU2679813C2 (en) * | 2013-07-03 | 2019-02-13 | Й.Д. Теиле ГмбХ унд Ко. КГ | Use of steel alloy for production of chains and chain parts and also chain link or chain part produced from such steel alloy |
Also Published As
Publication number | Publication date |
---|---|
DE4337148C1 (en) | 1994-10-27 |
DE59404980D1 (en) | 1998-02-12 |
EP0725841B1 (en) | 1998-01-07 |
PL178573B1 (en) | 2000-05-31 |
CZ255795A3 (en) | 1996-05-15 |
EP0725841A1 (en) | 1996-08-14 |
PL314106A1 (en) | 1996-08-19 |
CZ286056B6 (en) | 1999-12-15 |
ATE161897T1 (en) | 1998-01-15 |
WO1995012692A1 (en) | 1995-05-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: J.D. THEILE GMBH & CO., KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BERGHOFF, JURGEN;REEL/FRAME:007711/0052 Effective date: 19950620 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
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FPAY | Fee payment |
Year of fee payment: 8 |
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FPAY | Fee payment |
Year of fee payment: 12 |